Sheen: I know what you mean, Jimmy. That's why I set out early to sabotage my highly scientific brain with cartoons and sugar.

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Based on the 2001 movie Jimmy Neutron: Boy Genius, this CGI Nickelodeon series continues the adventures of JimmyNeutron, a preteen genius who creates inventions in his underground lab. He, his robot dog Goddard and his best friends; CarlWheezer, SheenEstevez, Libby Folfax, NickDean and Cindy Vortex save Retroville/the world from invention-induced disasters just about every episode. The show lasted from July 2002 to November 2006. It is the 16th Nicktoon, and the first to be animated using CGI.

Of interest is that the film and television series was made from consumer-grade programs. The show strains to compensate for the lack of raw technical power with very clever visuals. As per the very nature of its premise the "science" was either never explained or clearly made up.

This series provides examples of:

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Tropes A-M

Aborted Arc: The ending of "Men at Work" implies that the alien bandits Zix, Travoltron, and Tee, will attempt to hunt down and capture Skeet, whom they believe to be the technologically-upgraded McSpanky's captain, due his Employee of the Month plack. However, when they're next chronologically seen in "The Incredible Shrinking Town," they not only don't care for Skeet in the slightest, but he isn't even shown.

Accidental Hug: Between Jimmy and Cindy in "Retroville 9" after they win their first baseball game against Butch's team, complete with a brief dance of joy until they catch on to what they're doing and promptly separate with an embarassed look on their faces.

Sam's Verbal Tic ("Yeah!") is a reference to The Weird Al Show, where in the first Adventures of Fatman segment, Billy West played Al's Evil Uncle Frank, who plotted to flood the city and loot it using melted ice cream; the voice and tic was carried over from Frank. DNA Productions, before getting into 3D animation, animated the Fatman segments.

In "Win Lose or Kaboom", Hugh manages to win the game show with a single question, including a car. His voice actor, Mark DeCarlo, won a car (along with a boatload of other prizes and cash) on Sale of the Century in 1985; he managed it by tying with his opponent in the Speed Round and the opponent answered the tiebreaker incorrectly, sealing his win.

Aesop Amnesia: There wouldn't be a lot of conflict if Jimmy and his friends didn't have to learn time and time again that abusing science for their own selfish and personal end always has consequences.

Cindy: Jimmy, haven't we learned from the Yolkian incident not to talk to intergalactic strangers?

A.I. Is a Crapshoot: The Nanobots have a bad habit of taking Jimmy's orders to their most logical extreme. After being told to correct for errors and then (attemptedly) Logic Bombed with "humans' flaws are what make them perfect", they decide to delete humanity.

Aliens Speaking English: Taken to quite an extreme with not only the Yolkians, but the fact there is a "galactic television lineup" with billions of channels, all in English.

All-CGI Cartoon: Notable for being the first film and series animated entirely with off-the-shelf (as in, anyone can buy it) programs, more specifically, LightWave 3D.

Area 51: Appeared in the movie. In "The N-Men", Cindy, Libby, Sheen, and Carl are taken to "Area 86" after they prove unable to control the superpowers that they developed from contact with space radiation.

In "Jimmy for President", this is actually inverted, then played straight.

Miss Fowl: It has come to my attention that some of our candidates have been guilty of bribery, blackmail, and MURDER!![the kids in the audience gasp] Sorry, not murder, I meant operating a zeppelin on school premises.

In "Grumpy Young Men," the boys want to buy a violent video game that has a Media Classifications describing it as "for mature players only due to violence, exaggerated mayhem, and old lady kicking."

Art Evolution: The animation in the series was a MAJOR improvement from the pilot. The show itself gradually improved in scope and visuals, which (as mentioned) was limited by consumer-grade software. Later episodes could be compared to the look of an hour-length drama vs. a studio sitcom, with other shows being more cinematic.

Artistic License  Biology: In "Journey to the Center of Carl", Jimmy and Sheen enter Carl's body in order to get a virus's mitochondria so Jimmy can make a cure for the disease caused by the sick patches. In reality, this would make no sense, since viruses don't have mitochondria (though this was admittedly a genetically-engineered super virus).

When Jimmy disputes Cindy's report, he doesn't mention one of the most glaring problems: she claims that Guglielmo Marconi invented the radio in 1870, when Marconi wasn't even born until 1874.

In reality, Thomas Edison had little to do with the invention of the radio, since Marconi based it on a device invented by Heinrich Hertz to prove the existence of radio waves. Moreover, the key component of Hertz's apparatus was an induction coil, which was invented in 1836 — over a decade before Thomas Edison was even born.

Edison dismissively refers to Henry Ford as "such a knucklehead". Historically, Edison had great respect for Ford's work, and the two were close friends.

Edison was married to his second wife in 1886. The episode makes no mention of this. Since there's no evidence that he was an adulterer, his affair with Ms. Fowl seems unlikely.

While Edison was and still is well known for his experimentation with and promotion of direct current, he didn't invent it. It was first developed in the early 19th Century and would gradually be further developed over time by a succession of experimenters and engineers. Furthermore, Edison was largely against alternating current, which was an important development in electric power.

One of the episode's central conceits — that Edison disappearing from the past would outright prevent many important inventions and advances — is deeply flawed. While Edison was an important figure in the proliferation of electric power and did invent (or at least improve upon) many things we take for granted, it's very doubtful that him somehow being removed from history would prevent the development and proliferation of modern electric power, or the invention of most electrical devices and machines.

Ascended Extra: Despite having a decent amount of screen time, Sheen actually had a very minor role in the movie and shorts, basically filling out Jimmy's social circle beyond Carl, only to become exceptionally popular and a much more prominent character in the show.

Aside Glance: In "Sorry, Wrong Era", Jimmy briefly does one when Carl starts dancing calypso and singing while wearing a hula costume.

"Beach Party Mummy": Jimmy, Sheen, Carl, and Cindy were crowding around Libby to give her a makeover. Carl was the one mostly covering up the screen.

"Win, Lose, and Kaboom": At one point when fighting Meldar's robot army, the camera pans over to the right until April's mother's back fills the screen. Then the camera zooms out from, Meldar's assistant, Vandana's back.

One episode takes place in the "Bahama Quadrangle", which Jimmy, Sheen, and Carl visit so that Jimmy can prove them that nothing supernatural is going on there. They end up finding a super villain/scientist that appears to be the cause for odd sightings and disappearances... though the ending leaves us questioning it.

Sheen once refers to the Bermuda Triangle as the mythological North Dakota.

Berserk Button: Do NOT Insult Ultra Lord in any way, shape or form in front of Sheen. .

Sheen: What are you guys so worried about? Ultra Lord's gonna be here any minute. Cindy: Ultra Lord's not coming, you ding-dong! The Yolkians lied to you! Sheen: WHAT?! Then they have awakened the wrath of Sheen!

Carl: Not that fresh air and ticks in your sleeping bag isn't fun, but why do we have to go camping with you, Jimmy? Jimmy: Because if you don't, I'll be forced to publish these high-definition photos of you two playing with Pompono Beach Debbie Dolls. Sheen: Pompono Beach Debbie is an action figure! She possesses special powers that can defeat any adversary ... except Ultra Lord, of course.

In the episode where Libby, Sheen, and Jimmy run for class president: Sheen blackmails Carl with an embarrassing photograph of him at a party.

Brain Monster: The Brains, contestants in the Galactic Showdown game. They bragged on how they evolved to not need bodies anymore, as they consisted of nothing but floating brains.

Brain Wash Residue: Depending on your interpretation of the episode "Love Potion 976/J". Considering that we don't know the extent of the after effects of those love potions, you could have a nice debate on whether Jimmy, Sheen, and Carl's respective loves for Cindy, Libby, and Judy is "real".

Brawn Hilda: After time traveling into an alternate future where he is rich, Jimmy soon discovers he has a cranky, hideous nanny named "Hilgo."

Brilliant, but Lazy: Why do something as simple as neatly put away your piles of pants when you can implant chips in them that do it for you? Carl and Sheen call him out on this, though.

The Bully: Butch is a typical school bully who doesn't have any friends, but an even bigger one is Terry in "Safety First".

Chekhov's Gun: The solution to the problem in the episode is usually this.

Chosen One: Sheen is called "The Chosen One" by the monks of Shangri Llama, thanks to his strange ability to put his foot behind his head. Subverted because the monks don't really believe he's the true Chosen One - they were just sick of waiting around for the real one to show up. So he's a chosenChosen One?

Christmas Episode: "Holly Jolly Jimmy". The only one Christmas-themed episode in the entire show as well as the only one that aired in the month of December (2003 to be exact).

Colony Drop: Played for Drama in "Normal Boy", when Jimmy dumbs himself down in attempt to be "normal". Just a few hours prior, Jimmy's orange-juicer went haywire and shot dishes into space, disrupting an asteroid into hurtling directly towards Retroville.

Jimmy, Carl, Sheen and Cindy's pants get minds of their own and run away... in the first episode.

The famous "I see London..." gag is actually said in the first episode/movie, by Cindy, when Jimmy's pants fall down.

Cindy: I see London, I see France! Carl: Wow, you have really good eyesight....

It should be noted that this gag is usually used for females. Which turns this into Tempting Fate when, in the very next shot of her seconds later, Cindy's pants have run away, giving both the world and the audience a great look at her own underpants.

Confusing Multiple Negatives: Sheen does this to trick Mrs. Fowl into letting him go early in "Sheen's Brain". Jimmy does it right after so he can go after Sheen and then when Carl tries it, a fed up Mrs. Fowl just tells him to "PLANT IT!"

Continuity Cavalcade: In "Who Framed Jimmy Neutron?", Sheen asks if several villains Jimmy faced in previous episodes are responsible for framing him of the theft of a million dollars. The villains mentioned include Professor Calamitous, Dr. Moist, the Yokians, and "those three aliens" (Zix, Travoltron, and Tee).

Demoted to Extra: Nick - he was a somewhat relevant character in the movie, even with just an Informed Ability. In the series, he hardly gets any screen time. There were plans to bring him back to the main cast in season four, however.

Denser and Wackier: The crossovers with The Fairly Oddparents generally use humor more like the latter show, with the characters acting even sillier and getting into screwier situations - as well as much more slapstick. This happens especially when the characters are actually in Dimmsdale (which compared to Retroville is practically Cloud Cuckoo Land).

Disproportionate Retribution: In "Hall Monster", Jimmy is elected as the Hall Monitor and the power immediately goes to his head, causing him to bust students for the smallest things, like Carl having too many llama stickers on his lunchbox. It takes watching security footage that Goddard recorded and a reminder from his dad to realize the error of his ways.

The Ditz - Bolbi, though he seems like just a goofy foreigner at first.

Do-Anything Robot: Goddard, Jimmy's Robot Dog, seems to have a large arsenal of gadgets tucked away inside his chassis. To quote Hugh: "He does eleven billion and four things...except clean after himself."

Does This Remind You of Anything?: The Nanobots more or less "worship" Jimmy as their creator and often do really, really misguidedly bad things to "please" him. They're essentially religious extremists with Jimmy as their "god".

Dream Episode: In "I Dream Of Jimmy", Jimmy decides to go into Carl's dream in order to help him prevent his nightmares. The rest of the episode is devoted to Carl's dreamworld antics, such as a giant evil lima bean that chases him around, and Carl being the smart student while Jimmy is the class dunce.

Dreaming of a White Christmas: Averted in "Holly Jolly Jimmy". There is no snow in Retroville during Christmas, understandably, since it's in Texas. However, there are snowflakes falling right before the credits roll, so...

Jimmy originally wore navy blue shorts and brown loafers giving him a more nerdy look, this was changed to blue jeans and sneakers making him look more kid-like.

Carl wore suspenders in the movie but loses them in the show.

Cindy wore a pink button-up shirt and black jeans. She also had her hair in pigtails. In the show she wears her hair in a single ponytail and wears a green halter shirt with khaki pants.

Libby retained her movie look until "Beach Party Mummy" when she decided to keep her Egyptian style braided hair used to disguise her as an Egyptian queen. In the following episode, her wardrobe also changed from a green dress to a pink shirt with navy blue pants.

One example is seen at the end of "The Phantom of Retroland" after among seeing the real Phantom, Hugh runs screaming right into the camera, his mouth covering the frame and turning it black.

It's also done during the "Funky Jam Dance Party" musical number in "Broadcast Blues", zooming into Brittany's singing mouth.

It also happens in "Grumpy Young Men" when scouts Cindy and Libby attempt to help the elderly Jimmy across the street, as he yells "I'm being old-napped!"

Edible Treasure: In the episode "Raise the Oozy Scab", Jimmy and his friends complete a school project by going in a submarine to find the lost treasure of a sunken ship. When they find the treasure, it turns out to be filled with salt water taffy, much to Jimmy's dismay. But at least they got an A+.

The End... Or Is It?: Attack of the Twonkies ends with Jimmy realizing he forgot to send Sheens Twonkie back, who didnt mutate because of his awful singing, and it ends up producing offspring which bounce into Retroville.

Epic Fail: After losing to many times in a gym race against Cindy, Jimmy sprays his shoes with a chemical compound to give him super speed. He runs in circles around her and showing off how fast he is, all gloating and confident, but he still lost. Why? Because he fell for the old point-and-look-behind-your-back distraction, the object of interest being a "1957 Van de Graff electrostatic generator".

Eskimos Aren't Real: Sheen is positive that ancient Egyptian curses are a myth, just like the Loch Ness Monster and North Dakota.

Eureka Moment: Almost every episode has Jimmy coming with a solution to the problem of the day with his mind.

The third one, Zix, talks like Jon Lovitz. A bit more devious than Jon Lovitz though ...

Quentin Smithee seems to be simply an expy of Quentin Tarantino (combined with a nod to the tendency for directors who have disowned films to credit themselves as Alan Smithee) up until we find out he's actually Professor Calamitus in a robot disguise.

Face Full of Alien Wing-Wong (Carl is impregnated with an alien child in "Who's Your Mommy?". The extra fat grows out from well, his butt - but let's not go there.)

Faeries Don't Believe in Humans, Either: Pops up at the end of the sleepover episode. The climax of the episode features a series of increasingly-nonsensical Catapult Nightmares involving the various characters and a flying vampiric cannibal pizza. The final nightmare turns out to belong to an actual pizza vampire, sleeping in his pizza box; when he explains his terrible dream to his wife, she consoles him that children don't exist, everyone knows that.

Famous, Famous, Fictional: In "The Incredible Shrinking Town", Carl tried to cheer Jimmy up after he said he was upset for being short.

Fancy Camping: Jimmy does this with the help of one of his inventions (guided by a holographic butler) not only because he couldn't bear to enjoy any trip without those conveniences, but also because his father is bad at being a camp leader

Flanderization: Quite prevalent. The cartoon adapted a few prominent traits of each character shown in the movie and ended up heavily exaggerating them over time.

Jimmy lost a few sympathetic traits in favor of emphasizing his pride, notably his kindness regarding Carl.

Carl's and Sheen's geeky interest in Llamas and Ultra-Lord became the chief focus of several episodes and defining character traits in others.

Judy Neutron jumped from being the more competent of Jimmy's parents with skills in vehicle maintenance to a notable Action Mom who discussed science theories with her son.

Nick's fainting at the end at the end of the movie was later emphasized into making him an Adaptational Wimp who was constantly injuring himself.

The Friend Nobody Likes: Sheen. He constantly annoys everyone with his constant ramblings about Ultra Lord, his annoying shouting, his low intelligence and there's the fact that he can be insensitive.

Sheen: Hey Robot! If the Junkman turns your parents into gravadiscs, can I have one?

Jimmy: Sheen!

Sheen: But they look so cool.

Robot: I don't like Sheen.

Carl: Tell me about it.

Jimmy as well. His brains, brilliance and him constantly putting the town (and sometimes, the world) make him very unpopular with the other kids. However, it is shown that while the others don't like him, they truly do care for him.

Cindy. Mainly because she's a bitch towards Jimmy and his friends. Libby and Brittany are the only members of the gang who truly like her.

"Freaky Friday" Flip: Jimmy and Cindy in "Trading Faces". Incidentally, at the end (where they had to manually switch back their memories) they found that one of the two had an extreme dislike of the other one. However Sheen said that it got too confusing reading the hilariously long name and deleted it, never getting to the end (and thus, figuring out who it belonged to). It is after that one that the two started getting closer.

Free-Range Children: The sixth grade cast behaves more like young adults/older teenagers. They run all about Retroville, hang out at the local fast food joints, and that's only what they do when not on an adventure caused by Jimmy's invention.

Getting Eaten Is Harmless: In the Jaws Whole Plot Reference episode Captain Betty, the Quint analog, is eaten by the giant turtle part way through the episode. However after Carl manages to shrink it down we see Captain Betty treading water, alive and well. He explains that the turtle spat him out at the last second as it was shrinking. This served not only to make the end happier, but kept Carl from possibly looking like he committed manslaughter by shrinking the turtle with the Captain still inside it.

Girls Have Cooties: Jimmy, Sheen, and Carl all exhibit this sentiment from time to time, especially at the beginning of the series. It wears off as the show progresses, however, giving way to Distracted by the Sexy.

Grand Finale: The series finale, "The League of Villains" features several of Jimmy's enemies coming together to defeat him and his friends once and for all. The kids also regain their superpowers when they battle them. It also features the Space Bandits doing a HeelFace Turn and Jimmy leaving the rest of the villains trapped in prehistory forever.

Head Desk: Done by Jimmy when he couldn't think of a script for a movie.

Heist Episode: "The Great Egg Heist". Princess Quin Su Shi sends Jimmy and his friends to the Retroville Museum to steal the Jade Egg and swap it with a replica, then bring the real Jade Egg back to her to prevent it from falling into the wrong hands. The Princess is later revealed to be a disguised Professor Calamitous. Fortunately, his plans fail because Carl accidentally brought back the replica instead of the real Jade Egg.

Hilarious Outtakes: These appear out of the blue at the end of the episode "Crouching Jimmy, Hidden Sheen".

Hollywood Tone-Deaf: Sheen is mocked relentlessly for his inability to sing throughout the series - there is even a reprise song number at the end of "My Big Fat Spy Wedding", where the characters belt out in glorious harmony "We all can sing except Sheen!" Becomes beneficial in "Attack of the Twonkies" - Sheen's singing is so bad that it actually puts the Twonkies (who normally become enraged and then mutate when they hear music) to sleep.

Idiosyncratic Wipes: Almost every scene transitions with the show's trademark atom logo flying away and then back towards the camera, with several similar music cues to accompany it.

Idiot Hero: For a genius, Jimmy sure makes a lot of utterly stupid decisions. In fact, most of the conflict that goes on in this show is the result of Jimmy making a questionable judgment call in the first place regarding his experiments. But then again, Jimmy's lack of common sense is arguably one of the main points of the series. He may be a "genius," but he's still a child.

Important Haircut: Libby gets one in the episode "Beach Party Mummy" to fool a bunch of mummies that were chasing the gang. She keeps the new look for the remainder of the series.

Impossibly Delicious Food: In the episode "Krunch Time", Jimmy creates a candy that has every enjoyable flavor imaginable, which causes problems when everyone in Retroville becomes completely addicted to it.

Intelligence Equals Isolation: In "Normal Boy", Jimmy becomes hurt by Cindy's criticisms when he keeps stealing her thunder at Show-and-Tell that he should just depart for college that he decides being intelligent is less valuable than being loved and respected. Not to mention, he has a secret crush on Cindy (even if he dislikes her insolence).

Laugh of Love: Cindy sometimes laughs when she's having romantic moments with Jimmy, most notably in the episodes "Love Potion 976/J" and "Stranded".

Jimmy: May I suggest that instead of the arm-missiles button, you push the one right below it? Carl: I know what button to push! I was just testing you.

Kids Are Cruel: Most of the other kids feel no sympathy towards Jimmy and even hurl insults at him when his inventions go awry.

Knight of Cerebus: When Sheen has his brain altered in "Sheen's Brain", he slowly goes insane with increasing intelligence and growing Psychic Powers, ultimately becoming a Reality WarpingSociopath who's too power-crazed to care about the fact that his head will eventually explode. He even brutally strikes Jimmy and Carl with a lightning bolt. Thankfully, he ultimately realizes that he's turned into a monster and changes back to normal, but damn.

Lady Looks Like a Dude: Carl's mother is the ugliest female on the show. With a very hoarse masculine voice. Helps that like Carl, and Mr. Wheezer, she is voiced by Rob Paulsen.

Limited Wardrobe: The only time a character's plain-clothes outfit changes is the episode where Libby gets a makeover, and declares that she's keeping the new look. From then on, that became the outfit she wore every episode.

Betty and Cindy toward Jimmy, though the latter two would claim not to like each other.

In the Jimmy Timmy Power Hours, there was also Timmy/Cindy/Jimmy — the two boys fight over her in the second power hour ("When Nerds Collide"), but Cindy ends up in a way, going with both of them since she wished for a cross-dimensional dance party for Dimmsdale and Retroville's elementary schools so she can dance with both Jimmy and Timmy.

Carl's infatuation with Jimmy's mother.

Love Potion: Another one of Jimmy's inventions. It causes him to fall for Cindy, and Sheen for Libby. And Carl falls for Jimmy's Mom, which then goes on to become a Running Gag.

Mind Screw: Jimmy traversing Carl's Dream. Being well, a dream, for the most part, it has no logic or sense. Though like most dreams, Carl sees it as perfectly normal. So Jimmy, in order to prove to him, without a doubt, that this is not the real world, does something that could possibly never happen in real life, he kisses Cindy.

Missing Mom: Sheen. Word of God says his mother died when he was young - they don't say her cause of death, however.

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In "Jimmy Goes to College", the boy genius streaks through the halls of the Pomona School of Advanced Physics - only to find himself face to face with the elderly female patroness of the coveted Moran Grant. He quickly covers his front with a book and his backside with an exit sign.

In the movie, Sheen can be seen naked - peeing, in the shower.

Sheen: I'm peeing! In the shower! I'm still doing it! ( Pumps both hands in the air) Go go go!

Nerdy Bully: In the episode 'Jimmy Goes To College', Jimmy enters college and meets a Jerkass nerd named Seymour Flimelflarb. At first Seymour seems to be a good friend to Jimmy, yet it's all an act as he's actually jealous of Jimmy stealing his thunder. So Seymour spends most of the episode framing Jimmy for things he didn't do, sabotaging his work and getting him expelled.

Never My Fault: In "King of Mars", Cindy blames Jimmy for her brief FaceHeel Turn with Eustace, for never paying any attention to her, and after Eustace double-crosses​ her. Jimmy, predictably, brings it back on Cindy for not catching on that he's obviously pretending to not notice her to hide the fact that he likes her.

Never Say "Die": In "The N-Men", Jimmy has to save himself and his friends before their "life forces" are depleted. Overall, however, the show doesn't shun away from terms like "kill", "die" or "murder".

Never Trust a Trailer: The opening credits to "Operation: Rescue Jet Fusion" feature Cindy and Libby who otherwise never once appear or are referenced to throughout the entire special.

Nearly every episode and movie is this. Jimmy's inventions and motives usually cause the problem of the week and it's up to him to fix the problem he caused.

Of course, Jimmy's friends also get in on the act every now and then. In "The Eggpire Strikes Back" Cindy told King Goobot how to get into Jimmy's lab, giving him the tools he needed to revive Poultra.

Non-Standard Kiss: Inverted in "Win, Lose and Kaboom!": when April locks lips with Jimmy, he assumes that she's kissing him, but she states that it's the Gorlockan seal of trust, and has no idea what a kiss is. Averted when she does it again later, saying "that was a kiss" after Jimmy asks if that was the aforementioned seal of trust.

Noodle Incident: According to "The Incredible Shrinking Town", Hugh Neutron got his head stuck in a trash compactor at least 19 times.

Obliquely Obfuscated Occupation: For the first two-and-a-quarter seasons, we're given absolutely no hint as to what Hugh does for a living. Even when it finally becomes a plot point (season 3, episode 5, "Fundemonium"), we're not told exactly what he does, just that he works at a car company called Mallard Motors. And they lampshade it:

Hugh: Howdy boys! Hey Jimbo, better start packin', we gotta move at the end of the week if I want to keep my job.

Jimmy: We're moving?!

Carl: You're moving?!

Sheen: Your dad has a job?!

Obliviously Evil: The Nanobots. They believe themselves to simply be doing what Jimmy wants/programmed them to do, and they kind of are...but they always take it much farther than they should. They both genuinely respect and revere Jimmy as their creator otherwise.

Out of Focus: Jimmy's parents, come Season 3, where they are absent for as many as 8 episodes, whereas in the previous two seasons Hugh and Judy Neutron respectively skipped as few as two and three episodes altogether, possibly because of Cindy, Libby as well as villains taking up much more screen time this time around.

Overly Long Scream: Lampshaded by Carl in "The Tomorrow Boys" when Jimmy finds out in the Bad Future that he is married to Cindy. He starts screaming, we cut to commercials... We come back, and he's still screaming.

Hugh's "de-dorkination" in "Make Room for Daddy-o" that involves him wearing a black leather jacket, matching pants and shades complete with a motorcycle all scream Arnold Schwarzenegger from Terminator 2: Judgment Day.

Playing Sick: Invoked by Jimmy when he invents patches that make the wearer sick when applied. He gives them to the rest of the kids so they can skip school. Until they get absorbed into their bodies, forcing Jimmy and Sheen to pull a "Fantastic Voyage" Plot into Carl to get the cure needed.

Pilot Episode: Included on some DVDs was the original pilot of the show, which involved Hugh trying to convince Judy that Jimmy would soon be back from his attempt to run away from home while Jimmy was in reality trying to fend off an invasion of aliens he'd inadvertently caused, which Nickelodeon liked so much that they made it into the Big Damn Movie that started it all.

Professor Calamitous's debut episode had Jimmy defeat him when he remembered that the villain didn't install a bathroom in his robot suit and had him lured past a statue fountain of a urinating boy, a dog marking its territory on a fire hydrant, and a man watering his lawn with a hose to force him to stop for a bathroom break. Jimmy then had a police officer occupy the men's room. Calamitous briefly considered using the girl's room, but is beat to it by a little girl, causing him to go home in defeat.

Ptero Soarer: "Sorry, Wrong Era" has a classic example in the form of a Pteranodon that, for a short list, is called a "pterodactyl", is scaly, has pointed leathery wings, can pick things up with its feet, rears its unusually large young like a bird, flies inland, eats lizards instead of fish, lives in the same time as T-Rex and is bipedal. That being said, the writers did manage to get the lack of teeth and single wing finger right (although said wing finger is unusually flexible).

Real Award, Fictional Character: When Jimmy peeks into his and his friends' futures in one episode, he sees himself as the first-ever winner of the Nobel Prize in bulk.

Reality Warper: Meldar, the Big Bad of "Win, Lose and Kaboom" can do this thanks to his matrix generators. He even says that he can warp reality.

Recursive Canon: In Lights, Camera, Danger Jimmy requests that Goddard show him all of the world's most successful movies of all time at hyperspeed. The last film is none other than Jimmy Neutron: Boy Genius

Reed Richards Is Useless: Jimmy and his parents could have been millionaires if he sold some of his inventions instead of just making them for fun. They backfire way too much for someone to mass produce them, though. Also, Jimmy's dad once got a job making toys, which Jimmy amped up with his technology. The first one was met with such success that he got the job... as long as he kept designing toys of that same calibre every day. Jimmy ended up exhausting himself after a few days, which led to the accident of the week; the Nanobots making a rampage on Retroville on a doll-faced toy tank that grew in size to be a real tank.

Reed Snorkel: Jimmy, Carl, and Sheen use these in Cindy's swimming pool while on the run from a cop in "Who Framed Jimmy Neutron".

In "Granny Baby", Granny Neutron is turned into a baby and her character model is reused for Baby Eddie, a recurring villain in some of the future episodes, as well as Beautiful Gorgeous in a slide featuring her as an infant.

In "Jimmy Timmy Power Hour 2", Professor Calamitous turns Cindy into a fish that just happens to look exactly like Carl's favorite pet, Swimmy.

Ring Ring Crunch: Done in "The Mighty Wheezers," when Carl destroys his alarm clock with his fist with his new strength.

Rival Turned Evil: An unusual case in "The N-Men" - Jimmy himself is this due to finally getting fed up over how Cindy keeps overshadowing him. This sets him on a Hulking Out rampaging spree, and the irony is that the only one who stops him is Cindy herself.

Role Reprisal: While replaced by Patrick Stewart and Martin Short for the movie, the series has King Goobot and Ooblar played by S. Scott Bullock and Paul Greenberg, who played the characters in the original pilot Runaway Rocketboy.

Rotten Robotic Replacement: When Judy goes to a spa getaway, Jimmy creates a "Maternotron" to be her temporary replacement, so that he and his father can get out of doing chores his mother would otherwise be doing. Maternotron however becomes too controlling and strict, such as forcing Carl and Sheen to complete a giant questionnaire to decide whether or not they are allowed to spend time with Jimmy at all.

Nick hurting his leg and stating the obvious immediately afterwards. Weirdly, the exact same footage is used for this scene every time this happens. "Lady Sings the News" even Lampshades it when Jimmy and Cindy note that this has happened 15 times with Nick, and that everyone is expecting it to happen to Nick again shortly after he recovers.

The Twonkies that Sheen had after an episode appear in several later episodes; they don't morph however.

Various iterations of "the little boy's room" are used when a character has to pee, including "the little boy's ocean" by Carl when the boy's are flying over the ocean in Jimmy's hovercraft.

Carl also had his highly sensitive scapula.

Samus Is a Girl: Beautiful Gorgeous. She was wearing robotic armor similar to Samus'.

Saved by a Terrible Performance: Sheen is noted a being a Dreadful Musician, yet in "Attack of The Twonkies", his horrible singing ends up proving to be a lullaby to the twonkies whereas everybody else's singing is what causes them to attack in the first place.

Shoddy Shindig: In "Hypno Birthday To You", thanks to Jimmy hypnotizing his parents, they believe every single day to be his birthday, and throw a party each day as well. At first they're a lot of fun, with even his rivals Cindy and Libby enjoying themselves. A few parties in, however, and things take a turn- in addition to everyone being utterly sick of partying (and cake), the party clown is unable to perform any new tricks, and his parents run out of money to get presents and supplies. The result is a string of miserable parties that leaves the guests bored and unhappy.

Show Within a Show: ''UltraLord'' — Sheen is crazy over it to the point of claiming that Ultralord fills George Washington's role as the father of America.

Space Whale Aesop: The pilot episode, "When Pants Attack", has one: Always remember to be responsible and clean up after yourself, because if you don't, those pants that you forgot to pick up off your floor might become sentient and go on a mad rampage.

Split-Screen Phone Call: Jimmy gets several split-screens in a row in the "sick patch" episode (season 1, episode 12a), when his classmates call to complain about the patches suddenly dissolving into their skin, leaving them permanently sick. The call is actually a conference call, but we only see one classmate at a time, as they take turns speaking. This ends with Jimmy visibly pushing the split-line off the screen with his hand; the phone call continues, but Jimmy is now the only one the audience can hear.

Spotting the Thread: Seen in "Maximum Hugh," when Cindy and her mom have seemingly won the Parent-Child Picnic Games. Jimmy notices "Mrs. Vortex" having different eye color, foot size, ear lobe length, and a zipper on the back of her neck. (It turns out to be Cindy's athletic aunt, whose face resembles her mom.)

Spraying Drink from Nose: Jimmy successfully attempts by accidental Banana Peel to make Cindy and Libby laugh until the smoothie come out of their noses as an experiment for his time-powered remote control when previous attempts by Sheen and Carl fail to do so. When Jimmy's dad gets hold of the remote control, he continues to unintentionally time-torture Cindy and Libby until the get a brain freeze.

Carl looks like a 20-odd year younger version of his dad and Libby, too, bears an obvious resemblance to her mother.

There's no doubt about Hugh Neutron being Jimmys dad, although Judy Neutron's traits are also visible in her son.

Sheen's father, on the other hand, has a discernibly darked skin tone than Sheen, suggesting that his mother, whom we never see in the show, is of pure European ancestry. Then we have Cindy who didn't even inherit either of her parents' hair color.

Sheen: Don't do it Jimmy. Don't tell him about the limitless power-source you found on Mar-(Jimmy covers his mouth)Carl: And we're not going there to get the limitless power-source if that's what your thinking- (Jimmy covers his mouth)Sheen: MARS! (beat) Sorry I just get excited.

Stalker with a Crush: Carl toward Jimmy's mom. It's shown in several episodes that he has a picture of her and Hugh. Hugh's face is obscured by Carl's taped over it. Cindy comes off like this to Jimmy In Season 3. She and Jimmy do get together in the Finale.

Taking You with Me: After being defeated, Evil Jimmy breaks the dark matter chip he used to create his evil copy of Earth, causing the entire planet to be sucked into the the dark matter dimension in an attack to take Jimmy down with him.

In the short, "Hyper Corn", Jimmy's parents serve creamed corn for dinner. Jimmy refuses to eat it because, in his words, "It looks like somebody already digested it", and he tries to get rid of it by stuffing it into his hypercube. Unfortunately, Hugh mistakes the hypercube for a Rubik's cube and causes the creamed corn stored inside to fly everywhere. Some of it lands in Jimmy's mouth, and it's at this point that Jimmy finds out it actually tastes delicious.

In the movie "Win, Lose and Kaboom", the characters compete on an alien game show. During an eating challenge, Carl tries the disgusting-looking alien dish and finds it quite tasty, while the alien contestant finds the banana cream pie so repulsive that it causes his head to explode.

Time Travel: Some episodes involve use of a time machine in some capacity.

"The Big Pinch" has Jimmy use his time machine to bring Thomas Edison into the present in order to settle an argument with Cindy on when the radio was invented.

"Time is Money" had Jimmy go back to a time before his parents got married to convince his future father to invest 50 dollars in Hank McSpanky's burger scheme to change history so that Jimmy's family would be wealthy enough to afford a set of encyclopedias he wanted. He goes back to set things right after finding his parents to be snobby and neglectful towards him because of the altered timeline.

"Sorry, Wrong Era" has Jimmy, Carl, and Sheen sent back to the Cretaceous Period because of Hugh meddling with Jimmy's time replay remote.

The Voiceless: Despite appearing fairly often (mostly as a background character with little to no impact on the story though), Mr. Vortex, Cindy's father, never utters a single syllable throughout the entire show. His brief cameo in the movie is just as speechless, thus making him the only parent of the main gang to never get a line of dialogue in spite of making an actual appearance.

Too Qualified to Apply: In "The Science Fair Affair", Principal Willoughby agrees to Cindy's decision to ban Jimmy Neutron from the school science fair, since he won the last three in a row, and all his scientific knowledge gives him an unfair advantage over the other students.

Totem Pole Trench: Seen in "The Phantom of Retroland," when Cindy and Libby dress up as the titular Phantom to scare Jimmy and his friends (Libby on top and wearing the mask, and Cindy on bottom.)

Trauma Button Ending: At the end of "Journey to the Center of Carl", Miss Fowl's class is back in school after almost becoming permanently sick thanks to Jimmy's latest invention. On this day, Miss Fowl introduces them to a new student, who happens to have a cold, causing everyone to freak out and clear the room.

Ugly Guy, Hot Wife: Hugh and Judy, though Hugh's just a moron, and Carl and Elkie, though it's just a one episode fling, and then there's The Junkman and Beautiful Gorgeous.

Undead Author: Jimmy points out the difficulties with this in "The Phantom of Retroland", asking how anyone would know the Phantom's victim's last words if no one was there to hear them.

Underdogs Never Lose: Averted 100% in "Retroville 9". Jimmy and his class qualify for the Junior World Baseball Championships in Nagoia, Japan. The rest of the kids don't know, however, that the only reason why they ever managed to win a game of baseball is because of the technological advances Jimmy applied to their bats and gloves. Right before the Big Game starts, Jimmy's conscience is aroused by "Tremendous Jackson's" (an obvious spoof of Bo Jackson) opening speech, in which he expresses pride over the fact that Jimmy's class qualified fair and square, without resorting to any technological tricks. And so, he proceeds to tell the others the truth as well as to encourage them to try and win the game clean. They all go out on the pitch full of zeal... only to end up having their butts handed to them without scoring a single point. That's just how cruel that show is.

Viewers Are Morons: Considering the show's rather mature take on humor and little emphasis on slapstick, it may come as a surprise when characters (more often than not Jimmy) like to elaborate on scientific facts that any audience should probably be well familiar with or perfectly understandable. It's never too distracting but still.

"Beach Party Mummy" is quite possibly one of the worst offenders, with Jimmy rather unnecessarily explaining the definition of hieroglyphics and mummies.

"The Eggpire Strikes Back", the scene at school where Ooblar tries to break up Jimmy and Cindy's argument. "Pipe down!" And where Jimmy and Goddard run to the park where Poultra's egg is.

"Professor Calamitous, I Presume", with Calamitous in the robot suit walking to Jimmy's house.

What Happened to the Mouse?: The concept of Jimmy being extremely secretive about his lab, never allowing anyone inside except Goddard, Carl and Sheen is somewhat relevant in the first season, especially "The Egg-Pire Strikes Back" special, where he goes as far as to wipe Cindy's memories of how to get in (using a device that, appropriately enough, will never be referenced to again throughout the rest of the show). Later on, it seems like everybody can and will enter the lab whenever they please (or plot convenience will require them to) and while Jimmy will occasionally express his dismay at the idea of Cindy or Libby hanging around his inventions (due to them being girls and all), other times he'll just have them stay behind a yellow line on the floor, and some other times he just won't care at all.

Averted - Retroville is in Texas. This is also played with in one of the episodes where Jimmy states that his script for a movie has one of the locations in 'a fictional city in Texas'. The theory is reinforced by the fact that the company responsible for the show's animation itself is based in Dallas and the Christmas Episode is uncommonly snow-free.

Although, in the first episode Cindy mentions that Jimmy's head is the size of Texas, to which Carl, upset, replies that his uncle is from Texas, and not that they live in Texas.

Elke (while riding Jimmy's rocket through an asteroid belt with Carl): "Carl! Is too fast! Make with the slowing down!"

Rather ironic (and possibly the result of Cultural Blending) considering that Swedish people are known throughout the world for their impeccable grasp of English with little to no foreign accent or grammatical slips to betray their origins.

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